There's much speculation that even if Libby is found guilty, GW will likely pardon him at some point -- like his father did for all of the Iran-contra guilty parties. E.J. Dionne recently wrote,

If Libby, through nods and winks, knows that at the end of Bush's term, the president will issue an unconditional pardon, he will have no interest in helping Fitzgerald, and every interest in shutting up. If Bush truly wants the public to know all the facts in the leak case, as he has claimed in the past, he will announce now that he will not pardon Libby. That would let Fitzgerald finish his work unimpeded, and we would all have a chance, at last, to learn how and why this sad affair came to pass.

Dems should press for Bush to make this pledge publicly. Of course, GW will refuse, but again the Dems should demand it repeatedly, making it an echo chorus on the airwaves the same way the Republican mouthpieces recited the "criminalization of politics" phrase.